Perhaps you should try some spelling variations:
cham duc » pham duc, pham duy, phan duc
hanh dau » hang dau, danh dau, han dau
van hanh » van thanh, ban hanh, van anh
cuu tre » cua tre, cau tren, cau treo
dau cuu » dau cua, dau cuoi
hieu vu » hieu va, hieu su, dieu vu
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
sai ky » sac ky
te sai » te tai, te bai, te lai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky tang xa hoi. ((hieu vu) or (hieu ve)) ((cham duc) OR (cham soc)) van hanh dau cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky tang xa hoi. ((hieu vu) OR (hieu ve)) ((cham duc) OR (cham soc)) van hanh dau cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky tang xa hoi. ((hieu vu) or (hieu ve)) ((cham duc) OR (cham soc)) van hanh dau cuu tre*".